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Question: Answered & Verified by Expert
If dielectric is inserted in charged capacitor (battery removed), then quantity that remains constant is
PhysicsCapacitanceJEE Main
Options:
  • A capacitance
  • B potential
  • C intensity
  • D charge
Solution:
1778 Upvotes Verified Answer
The correct answer is: charge
Variation of different variables (Q, $C, V, E$ and $U$ ) of parallel plate capacitor when dielectric $(K)$ is introduced when battery is removed is
$$
\begin{array}{ll}
C^{\prime}=K C & E^{\prime}=E / K \\
Q^{\prime}=Q & U^{\prime}=U / K \\
V^{\prime}=V / K &
\end{array}
$$

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